[ 15.099326][ T309] 8021q: 802.1Q VLAN Support v1.8 [ 15.907189][ T320] gre: GRE over IPv4 demultiplexor driver [ 15.920034][ T320] ip_gre: GRE over IPv4 tunneling driver [ 21.059717][ T387] GACT probability NOT on [ 87.977516][ T680] [ 87.977681][ T680] ============================================ [ 87.977880][ T680] WARNING: possible recursive locking detected [ 87.978080][ T680] 6.13.0-rc5-virtme #1 Not tainted [ 87.978243][ T680] -------------------------------------------- [ 87.978445][ T680] ip/680 is trying to acquire lock: [ 87.978602][ T680] ffffffffbb7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 87.978923][ T680] [ 87.978923][ T680] but task is already holding lock: [ 87.979149][ T680] ffffffffbb7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 87.979442][ T680] [ 87.979442][ T680] other info that might help us debug this: [ 87.979672][ T680] Possible unsafe locking scenario: [ 87.979672][ T680] [ 87.979888][ T680] CPU0 [ 87.979999][ T680] ---- [ 87.980111][ T680] lock((netdev_chain).rwsem); [ 87.980256][ T680] lock((netdev_chain).rwsem); [ 87.980403][ T680] [ 87.980403][ T680] *** DEADLOCK *** [ 87.980403][ T680] [ 87.980626][ T680] May be due to missing lock nesting notation [ 87.980626][ T680] [ 87.980846][ T680] 2 locks held by ip/680: [ 87.980966][ T680] #0: ffffffffbb7e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 87.981227][ T680] #1: ffffffffbb7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 87.981518][ T680] [ 87.981518][ T680] stack backtrace: [ 87.981701][ T680] CPU: 2 UID: 0 PID: 680 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 87.981920][ T680] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 87.982104][ T680] Call Trace: [ 87.982220][ T680] [ 87.982301][ T680] dump_stack_lvl+0x82/0xd0 [ 87.982453][ T680] print_deadlock_bug+0x40a/0x650 [ 87.982608][ T680] validate_chain+0x5bf/0xae0 [ 87.982754][ T680] ? __pfx_validate_chain+0x10/0x10 [ 87.982913][ T680] ? hlock_class+0x4e/0x130 [ 87.983055][ T680] ? mark_lock+0x38/0x3e0 [ 87.983171][ T680] __lock_acquire+0xb9a/0x1680 [ 87.983348][ T680] lock_acquire.part.0+0xeb/0x330 [ 87.983494][ T680] ? blocking_notifier_call_chain+0x50/0x90 [ 87.983692][ T680] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 87.983876][ T680] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 87.984020][ T680] ? trace_lock_acquire+0x14c/0x1f0 [ 87.984170][ T680] ? lock_acquire+0x32/0xc0 [ 87.984322][ T680] ? blocking_notifier_call_chain+0x50/0x90 [ 87.984503][ T680] down_read+0x9f/0x340 [ 87.984618][ T680] ? blocking_notifier_call_chain+0x50/0x90 [ 87.984807][ T680] ? __pfx_down_read+0x10/0x10 [ 87.984952][ T680] ? __lock_release+0x103/0x460 [ 87.985096][ T680] ? netconsole_netdev_event+0x2c1/0x620 [ 87.985243][ T680] ? __pfx___lock_release+0x10/0x10 [ 87.985391][ T680] blocking_notifier_call_chain+0x50/0x90 [ 87.985537][ T680] __netdev_upper_dev_unlink+0xd9/0x220 [ 87.985686][ T680] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 87.985867][ T680] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 87.986013][ T680] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 87.986192][ T680] ? rtnl_is_locked+0x15/0x20 [ 87.986342][ T680] netdev_upper_dev_unlink+0x71/0xa0 [ 87.986489][ T680] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 87.986670][ T680] ? netconsole_netdev_event+0x2c1/0x620 [ 87.986815][ T680] ? mutex_is_locked+0x1c/0x60 [ 87.986960][ T680] ? rtnl_is_locked+0x15/0x20 [ 87.987109][ T680] ? netdev_master_upper_dev_get+0x13/0x120 [ 87.987287][ T680] vrf_device_event+0x78/0xe0 [vrf] [ 87.987435][ T680] notifier_call_chain+0xcd/0x150 [ 87.987582][ T680] blocking_notifier_call_chain+0x66/0x90 [ 87.987734][ T680] unregister_netdevice_many_notify+0xa7b/0x1580 [ 87.987913][ T680] ? hlock_class+0x4e/0x130 [ 87.988057][ T680] ? mark_lock+0x38/0x3e0 [ 87.988180][ T680] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 87.988374][ T680] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 87.988572][ T680] ? kfree+0xf3/0x330 [ 87.988689][ T680] ? vlan_vid_del+0x310/0x5e0 [ 87.988839][ T680] ? vlan_vid_del+0x310/0x5e0 [ 87.988987][ T680] rtnl_dellink+0x348/0xa40 [ 87.989134][ T680] ? __pfx_rtnl_dellink+0x10/0x10 [ 87.989293][ T680] ? find_held_lock+0x2c/0x110 [ 87.989445][ T680] ? __lock_release+0x103/0x460 [ 87.989592][ T680] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 87.989745][ T680] ? __pfx___lock_release+0x10/0x10 [ 87.989898][ T680] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 87.990045][ T680] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 87.990196][ T680] ? __pfx_rtnl_dellink+0x10/0x10 [ 87.990342][ T680] rtnetlink_rcv_msg+0x712/0xc10 [ 87.990493][ T680] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 87.990642][ T680] ? hlock_class+0x4e/0x130 [ 87.990796][ T680] ? mark_lock+0x38/0x3e0 [ 87.990909][ T680] ? __lock_acquire+0xb9a/0x1680 [ 87.991054][ T680] netlink_rcv_skb+0x130/0x360 [ 87.991201][ T680] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 87.991347][ T680] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 87.991503][ T680] ? netlink_deliver_tap+0x13e/0x340 [ 87.991657][ T680] ? netlink_deliver_tap+0xc3/0x340 [ 87.991806][ T680] netlink_unicast+0x44b/0x710 [ 87.991951][ T680] ? __pfx_netlink_unicast+0x10/0x10 [ 87.992097][ T680] ? find_held_lock+0x2c/0x110 [ 87.992244][ T680] netlink_sendmsg+0x723/0xbe0 [ 87.992389][ T680] ? __pfx_netlink_sendmsg+0x10/0x10 [ 87.992537][ T680] ____sys_sendmsg+0x7ac/0xa10 [ 87.992692][ T680] ? __pfx_____sys_sendmsg+0x10/0x10 [ 87.992860][ T680] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 87.993100][ T680] ___sys_sendmsg+0xee/0x170 [ 87.993247][ T680] ? __pfx____sys_sendmsg+0x10/0x10 [ 87.993396][ T680] ? kasan_save_stack+0x34/0x50 [ 87.993544][ T680] ? kasan_save_stack+0x24/0x50 [ 87.993693][ T680] ? __kasan_record_aux_stack+0x8e/0xa0 [ 87.993842][ T680] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 87.994033][ T680] ? __x64_sys_close+0x7c/0xd0 [ 87.994181][ T680] ? do_syscall_64+0xc1/0x1d0 [ 87.994328][ T680] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.994510][ T680] ? __lock_acquire+0xb9a/0x1680 [ 87.994667][ T680] ? find_held_lock+0x2c/0x110 [ 87.994816][ T680] ? __lock_release+0x103/0x460 [ 87.994965][ T680] ? __virt_addr_valid+0x22b/0x430 [ 87.995112][ T680] ? __pfx___lock_release+0x10/0x10 [ 87.995264][ T680] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 87.995411][ T680] __sys_sendmsg+0x109/0x1a0 [ 87.995555][ T680] ? __pfx___sys_sendmsg+0x10/0x10 [ 87.995702][ T680] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 87.995901][ T680] do_syscall_64+0xc1/0x1d0 [ 87.996048][ T680] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.996233][ T680] RIP: 0033:0x7fae5a7c59a7 [ 87.996412][ T680] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 87.996935][ T680] RSP: 002b:00007fffdfc94d28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 87.997157][ T680] RAX: ffffffffffffffda RBX: 00007fffdfc95450 RCX: 00007fae5a7c59a7 [ 87.997386][ T680] RDX: 0000000000000000 RSI: 00007fffdfc94d90 RDI: 0000000000000005 [ 87.997615][ T680] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 87.997834][ T680] R10: 00007fae5a683ef8 R11: 0000000000000246 R12: 0000000000000002 [ 87.998051][ T680] R13: 000000006778ffd4 R14: 0000000000498600 R15: 0000000000000000 [ 87.998308][ T680] [ 88.022369][ T680] ip (680) used greatest stack depth: 23704 bytes left